Carrier-distributing apparatus for pneumatic-dispatch systems



Feb. 7, 1928. 1,658,480

w. H. DlNsPr-:L

CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8. 1925 11 Sheets-Sheet l W VEN TOR y A TTORNE Y Feb. 7, 192s.` 1,658,480

W. H. DlNSPEL CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8. 1925 11 Sheets-Sheet 2 /7/ 2IVIKVNTOR BY Win/1.05%

A TTORNE Y Fb. 7, 192s.y 1,658,480

W. H. DINSPEL CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8. 1925 l 11 Sheets-Sheet 3 Feb. 7, y1928. 1,558,480

w. H. DlNsPEL CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8. 1925 11 Sheejcs-Sheet 4 INVE OR WMM ,y

BY www ATTORNEY Feb. 7, 1928. 1,658,480

w. H. DlNsPEL CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Fi1ed sept. a. 1925 11 sheets-sheet 5 @o O INVENTOR ATTORNEY Feb. 7, 1928. 1,658,480'

w. H. DlNsPEL CARRIER DISTRIBUTING APPARATS FOR PNEUMATICI DISPATCH SYSTEMS Filed Sept. 8. 1925 11 Sheets-Sheet 6 Feb. 7, 1928.

1,658,480 w. H. nlNsPEl.

CARRIER4 DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8 1925 11 Sheets-Sheet 7 Feb. 7, 192s. 1,658,480-

w. H. DlNsPEL CARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS v Filed sept. Ve. 1925 11 sheets-sheet 8 'l woeutoz Feb. 7, A1923. 1,658,480

l w. H. DINSPEL JARRIER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS Filed Sept. 8. 1925 11 Sheets-Sheet 9 @t elk/tamu;

Feb. '7, 1928. 1,658,480

w. H. DlNsPEL. f

CARRER DISTRIBUTING APPARATUS FOR PNEUMATIC DISPATCH SYSTEMS' Filed Sept. 8.` 1925 11 Sheets-Sheet l0 A Huw@ Y@ nulwmlmmm Feb. 7, 1928. 1,658,480

w. H. DlNsPEL H SYSTEMS Filed Sept. 8. 1925 11 sheets-sheet 11 -Wil l 4Asilla! 1., 1 nun ll Illlllllll y ruimten; Yen-s.; n.

NL.; OF 1 l' cARRIEn-nrsrnrnnfrine nrrnne'rns Een e PNeniirlAfrIe-nsrnircir "sysrnnsl i This invention @relates in general ,tothe construction of delivervi terminals orf carrier eject-ing` devices tor the conveyor tubesleff A ity of operators inuccordince necessary to provi -pneunizitic dispatch systems.' C 1 ln the operzitiono pneumatic dispatch apparatus installations in cennectionnivith which a lurge volunie et business is .transacted considerable ditliciilti'jlizis been experi-- enced in eliestivclkv disposiro` ib el 'the carriers as t'fistas-the;i :ire delivered'by thetubes.

The ciipucitv et each individiiiil tube for delivering"carriersto the' operators station` quireiiieuts oit the Work. l i

The invention includes the use ot i czirrier directing` dericeino'vsb'lv mounted at the delivery end etai dispatch tubev and operable by ineensiindertlie control ofen operator to direct zi carrier delivered b v the tube te the-operator@ station. En u preferred enibodiment of the invention `tivo such directing devices :ireieniployedand are mounted for the purpose on opposite sides oit the discliureieend oi" `thedispatch tube. The

,directing devices :ire piietully mounted and ure operated through it prieiiiinitic device actuetedbv changes in pressure conditions obtained through the iise'ot the partial vucuiun employed in the dispatch system es zi, whole Controlling; means for the pneunieitic devices tekethe forni of valve devices accessible to the .individual operators at their stations so that the iictuzitien oi? :i valve device will cause u, carrier to be discharged frointhe delivery end ot `the dispatch tube desired operators station. K I

The invention muy V:ilso be curried out in the forni' et mechanically op'erebledevices by which the kindividual operators may and to more along' i chutey device to the `unusually acti-inte the Aeppropriete carrier Vdirectiiie` device to bringt about zi like" effect,

that isi to divert the station. A feature-ot thisffernio theiner to the desired r` a, ieee fserliaiino. 54cm.

n vention-resides in-the'useiof four actuating members retherthen merely e pair of zictiiiitn servedfflfim theeziinetube. f i i Still enotherfenibodiment ofthe invent-ion contemplates the/"use kof lelectrical ineiinsffor Ying -ii'ieinbers' so that Vtouroperators may beil se. 'leesrenon @c e.: 'mines sYsTEii/rs,

*controlling kthe actuation of carrier divertconstruction ilrezidy described.y

'Other features ofi 'theinvention liereinaftllA referredtokyA lin the 'drswings;v f

#carrier delivery terminal-for pneumatic ing member-set the 'saline' general'ztype cf Figure'l is-ie. view in side ele'vetiono'fy ein site

disin'itclr tubes which embodies thefeinven-i i an enlarged scale.

Figure 3; is a view in horizontalgsection ofV tliepurts sliown'in FigiirelQ. f

Figure' 4 is e planrvieiv of a portion `of the device :shown l in Figure l und teken "on zin 'enlarged scale.l

' mechanism shown in Figure l p Figure 6 is la. yview inside elevation of parts sliewn in Figure f Figure 7 is u1 "vieu" in side lelevation of a" delivery` chiite member! used in `connection vieW- invertical section off the. parte" shown in Figure v1 und taken on Figure 5 is e' plein viewfot e detaily of the with the device shown in'Figure land taken on unenlzirgfed scale. p v

Figurer? is :i sectional yviewteken on the linefSSlof Figure `'l yandv on an enlargedy scale.f i

Figure Q'is :i viei'v iny perspective showing.'

the iiiv'e'ntio e carrier checking device forming pert- 'of lFigure'l() is aview inside elevation of` af modied i forni terininiilff Figure lis e view'in side elevationtnkenf` ou ony in enlarged scaleof a portion ofthev *apparatus shOivnin Figurel0.l

Figure` l2-is` a. il'iewinfvertical sectiony let the device shoivnin Figure 11. i

Fiffgure 13 isV al shown in Figure ll.

Figure Mis e horizontal `sectional View teken-on the line 1494401 Figure 11;

teken enthe linele-li of Figure l1.

plan View"y yof the parts Vof carrier dischergingI Figure l5 is e vieivin horinontal section Figure 16 is a view in horizontal section k to the4 points from which they were sent.

In the operation of pneumatic dispatch systems, the number of carriers transmitted through a given dispatch tube is relatively high so that it is impracticable for a single operator to take care of the carriers delivered by the tube. rldhis necessitates the employment of a plurality ot operators to each tube in the system and presents the problem of serving carriers to a plurality ol' operators without interference ot' the operators with each otherv in the conduct ot the work.

rlfhedistribution of carriers from aY single ,tube to a plurality oli operators 1s achieved by means .of the apparatus shown in Figure 1 and the means by which this usel'ul result is brought about includes a pair of delivery chute. members 11 and 12 having a sloping or inclined disposition by which carriers may be delivered from. the discharge end of the tube 10 to opposite sides of a table or desk into the immediate reach of the operators stationed at these points.

The upper ends ot the chute members 11 and 12 cooperate. with a 'hollow cage or framework 13 which is in eect an extension of the dispatch tube 10, carriers being delivered from the cage 13 into one or the other of the delivery chutes 11 and 12 as desired by the operators. rlhe floor or base of the cage 13 includes a seat 1li on which the end of a carrier emerging from the tube 1() is adapted to rest pending the discharge of the carrier into one or the other of the chutes 11 and 12 through the action of an .ejecting member 14 or 15 which cooperate respectively with the delivery chutes 11 and12..

The ejecting members 14C and 15 consist of arms or levers pivoted at points 1G carried by a spider member 17 located just above the upper end ot' the cage member 13 already referred to. The ejecting members 14 and 15 are located on opposite sides of the cage Ymember 13 and are adapted to kbe swung into the cage structure to thereby engage a carrier 18 contained therein and to discharge the lcarrier into the appropriate chute member 11 or 12. The discharg ing position of the ejecting member is shown in dotted lines in Figure 2 of the drawing.

In order to operate the ejecting members, pneumatic devices 19 and 2O are provided which take the form of hollow casings provided with internal diaphragme 21 adapted to divide the interior of the casings into compartments whereby differences in pressure may be applied to either side ot the diaphragm as desired in order to bring about the operation or release of the eject ing` members 1l and 15.

The diaphragm. 21 is flexible and is clamped at its mid portion between platesr 22 carried by a stem 23 projecting through the outer 'l'ace ot the casing and adapted to slide in the bearing thus provided in the wall `ot'v the casing or housing 19 or 2l). fr continuation 2l of the stem 23 projects through the oppositewall of the casing in aI bearing/5125 'formed for the purpose and through an arm 2b and a line 27y is connected with the upper extremity of the corresponding ejectingf member 1st or 15. IL stop member 28 carried by the rod is adapted to engage the outer tace ot the bearing member 25 in the operating movenu-uit of the diaphragm 21 to thereby control the extent ot operating movement of the corresponding ejecting member 1&1-` or 15.

With this construction it will be seen that the connection ol the chamber 2S) on one side oi. the diaphragm 21 in the casing 11:) or 2O with the partial vacuum provided in the tube system for the dispatch oli. carriers therethrough, and the simultaneous connection oi the chamber 3() on the other side ot' the diaphragm with atmosphere will bring about a movement ol" the diaphragm 21 from the position shown in Figure 2 et the drawing to the position shown in. Figure 3. It will be seen that this movement will result in the swinging ot the ejecting member 14 from the posit-ion shown in iull lines in Figure 2 tothe position shown in dotted lines in that ligure thereby bringing about the discharge of the carrier 18 from its position in the 13 into the delivery chute 12.

ln order to provide. the necessary connection between the chamber 29 in the casing 19 and the partial vacuum, a tube connection 31 is provided. in order to connect the other side ot the diaphragm 21 with atn'iosphere a tube connection 32 is provided between the chamber and the casing 19 and manually operable valve deA vice 323 located in a position accessible to the operator stationed at the delivery chute 12. ln like manner a tube connection PA- is provided between. the casing 20 appropriate to the discnarge element 15 and a valve device accessible to thc operator located at the delivery chute 11. Y

With this construction it, will be seen that fifi lilo

e of the partialvacuum existing in the cham- When-anoperator desires to have av lcarrier delivered at her station itis merely7 necessary-.f to depress the head 86.101. the appropriateV thereby moving the diaphragml toward' the outer vside of the casing 19 or 2O because bei' 29; This movement brings aboutfthe opwera-tion'of-v the corresponding carrier dis-1 charge member 14er 15 as will beseen.y

In order to automatically restore the can.

rer'discharge element to normal ypositioi'i following 'anoperation and to bring about the return movement iini'nediately 'iollowing the discharge movement ofthe member, a by-pa-ss or passage v38 isprovided between the chambers 29 and 30 inlthefcasings 19. andZO.Vv By 'this'arrangement the pressure conditions on y opposite sides of the diaphragm 2l are quickl f restored reoardless' ot whetherthe o aerab Y l Y tor continues to hold the control valve open i or whether .shey immediately allows the valveY to fl'close; This restoration of'substantially equal pressure conditions on' opposite sides of the diaphragm 2l brings about` a condition wherein a spring 39: actsgtoy force 'theV diaphragm 521 toits normal yinoperative posi -r iy tion as shown Vin Figure r2 ofAV the, dravvin-g` This movementlof` the. diaphragm, as will i clear,l will restore the? connected carrier *discharge element- 'll oi'f l5 to its normalorfin.- operativegposition.' Y

l K Iiioider to prevent the movement r`of a. :tol-v liiwing-carrieif'into the cage structurell during the operation: of ,discharging carrier i, from the cage7 afpair oft 'checking ori'ocking devices 4:0. are provided Tliecarrier cheekingzdevices `consist ofarmspivoted at 41 on.

spider element afcarried byl a perforated frio extension member d3 of tlietubey l() and arranged to rocker swing horizontally .about the Vpivotal points into andjoiit-of positions in; which the free ends ot' the memberst() project throughthe walls Of-thetiibe ext-en:-

Asions tiiitothe path ofnioiieinent ofthej carriers passing downwardly through the tube l0.r `In order to swing, the armsO about their pivot-s the other extremity'of each arm carries in a hinged. or ijiivotedrelat-ion thereto an operating bari i4 whichfis engaged bythe vertical portion of' the oper-A ating member QG `which connects vthediaphragm 2l with one of the carrier ejecting" spring device 45 carried devices 14 or l5. on the arm et() engages the operating inember 4A- and tends to swing-it aboutits kpivotal connection with the arm a0k tothereby move bers 55.

the 'operafting meinberto la positionsubstantially at right angles with the arm'40., Thef spring-heldmember 44 thereby forms a loose produce al smaller mo'vementxot the armetO andat the sametime to provide a cushioning i aiidyielding,eeet rwhichr will prevent jamming-of the locking arm-40 against a carrierV y in thetube Aeiteiision 43. A coil spring f cooperates with thepivot pinetfl andthe `arm connection `which provides for a` relatively j considerable movement' ot the member-26 to 4;() to `ii'f'ithdiawthe `arm to inoperative posif *tion* upon the ret-urn oi the operating vn'ieniber-26ste vnormal position.y A pair of .spring-pressed Wing-,menibeis-LQ:act tolhold f the *Y interposed carrier 1 in an erect vertical Y position. 1 y f f It Will thus ybe seen that the operation `which eject-s a-carriei.' into one `or the other delivery chutes llfand 12 simultaneously blocks the travelof another carrier into the"V kcage 13"` until', the carrier' ejecting member i has been returned to its normal position.`

The apparatus thereby functions to deliver nto' theoperator actiiating'oiie of the `valve devices 33er 35, a singlecarrierfor treatment of its contents. by the operator. It will valsov be vvseen that an l operator desirous l' of liaviiig'a rcarrier delivered to Ilier. station has merely-toioperate' the corresponding valve 323 Y oi"` 35 `to thereby causethe carrier to be ejected ti'ointlie cage 1K3 into the appropriate de-l livery-chiite 11 oril 12FA lVhile thepneumaticallyjoperated distrib- 'iiting or delivering `device suoli asf has rbeen described has been found tol givel complete wica' i `ea'tisfaction inpracticeit is also possible: tof* ,operate thedischarge mechanism through allie" `use of manually actuatable mechanical: l nieaiislv example vof afconstruction oi" this natureis'r shown in `Figure l() vof "tliev drawingsl in vwhich a pneu-matic'dispatch tube 50 is equippedat its lower'end vvith four inclined carrier' delivery chutes L-.the

delivery chiites being "arranged at 'angles of substantially ,ninetyk degrees separating each" othery In orderl todischargecarriers 52 from4l a cage or'compartnient into jdt-he appropriate devliv'ery tubel, inanuallyoperable ejector i members 54 are vprovideiil which are. adapted to be rocked abouty horizontal axes by vmeans'of hand crank' inemraiiged for yoperation through handle'fmembers 56 'stationedclosely adjacent` the position ot the operator and attachedto lexible The crank handles 55 are also ai-,

members 57 leadiingover guide pulleys 5S andy 59 'to' lthe craiikhandles 55 `already referred to. By thisarrangement a simple downward pull on ay handleGy has ltheveif'ect ofswinginga crankhandle 55 from alowcr to :a more elevatedposition and thereby swinging z the correspondingv ejector 54 through si-suitable 'distance to eject acari-ier iti int-o the delivery chute l disposed at the opposite side of the cage 58.k A coil spring 60 operates to swing the discharge member` 54 to its normal position upon release of the handle member 56 by the operator.

ln Figure l2 of the drawings there is shown a position ofthe parts in which one of the carrier ejecting devices 5i is shown, in'dotted line position7 in the act of ejecting c a carrier 52 from its position in the cage of charge devices 5l arranged in a substantially square formation in surrounding relation to the outlet or discharge end of the tube 5t). This obviously provides for the distribution of the carriers arriif'ing through the tube 50 to four different operators who may be seated at the foursides of a table or desk. The

inclined delivery chutes 5l are arranged to deliver carriers discharged into the open upper ends 62:3 Jthereof to the corresponding` operators stations which are arranged at substantially ninety degrees to each other about the discharge end of the dispatch tube.

ln order to support the various instru'- mentalities referred to, a cage or framework 58 is provided which is attached at its upper end to the tube through Va spider member ,G5 whichencloses the tube and provides a terminus for the upper ends of the cage rods 53. `rlhe spider member 59 provides also a bea-ring support for the shafts G6 on which the guide pulleys 59 are mounted at angles to each other of substantially ninety degrees as is clearly shown in Figure 18. The lower end of the cagev member terminates in a bridging` member Gl which in operation provides a seat or rest on which the individual carriers 87 are supported immediatelyv following their emergence from the mouth of the tube 5t) thereabove. 'Supported on the inclined delivery chutes 5l are bracket members G2 which support at their upper ends the guide pulleys 58 overwhich the tensile members pass to terminate in the handle 'members 56 placed adjacent the operators krprovided which depend from a collar G9 enclosing the tube 5() and extend inwardly toward each other at a point below the open end ofthe tube 50, the wing members thus serving to engage oppositesides of the interposed carrier G7 and to hold the same in an upright position such as is shown in full lines in Figures 1l and l2 ot the drawinv.

Referring to Figures 17 and 18 an electrical form vof operating means is provided.Y

78 of the solenoids or coils 79 so that enerv gization of the coils 79 produces a corresponding pull on the upper ends 77 of the carrier discharging members and thereby forces the lower end of the carrier discharging members into engagement with the carrier 80 resting on the seat 8l. In order to provide for the energization of the desired coil 79 by the operator, an electrical circuit 82 is provided having a source of current 83 and including branch circuits 84 leading to the coils 79. Suitable circuit closers 85 located inthe branch circuits 84: at points accessible to the operators at their stations provide for the closing of the circuits as desired so` as to divert carriers into thechutes leading to the operators stations.

In order to suitably support the pneumatic type mechanism shown in Figures l to 9 of the drawings aspider-shaped framework 82 carried by the cage structure 18 and the lower. perforated section 48 of the tube is provided with arms 83 to which stay rods 84 are attached for suppoiting engagement of the pneumatic cylinders 19 and 20 at their outer ends. ln addition, inclined and laterally extending strut members 85 are providedr which engage with the table or desk at their lower ends and provide a lateral brace for `along which the carriers slide to the lower end of the chute with a minimum of frictional Contact therewith.v At the lower end of the chute an opening 88 is provided in which the carrier is received and from y which it can be readily taken by the oper-A` ator for such treatment as its contents may require.

ldlhat I claim is l. In a discharge terminal for pneumatic dispatch tubes, a` carrier directing member movably mounted at the discharge end of the tube, and means actuatable from a distance and under the control of an operator for moving the directing member to direct a carrier laterally from a position in axial alinement with the tube.

2. In a discharge terminal for pneumatic dis iat-ch tubes a carrier directino' member` l a p a llU pivotally'inounted atvthe discharge fend of' the tube, ai chuteleading fromr the discli rge endl of the-tube to an. opeiatoi"sstation,

Validmeans actuatable from adistance and controlled by theoperator ier causing the carrier directing meinbertoswing to a position for directing a carrier into the chute -leadiligto the operators station. e c

Ina dischargetei'minal 'for pneumatic dispatch tubes, a pluralityot,carrier directing members movably mounted at the discharge end of the tube, aplurality oi operators7 stations, and means actuatable fromV va distance and under the control of each f operator for actuating the carrier dir cting memberappropriate to the operatorsrsta- Ation to divert carrier to that station. Y

Il. In' ay discharge terminal for Apneumatic dispatch tubes, a plurality ofcarricr directing members pivotally mountediat the discharge end of the' tube, a pluralityot operatois stations, chutes leading from the discharge ,end of the tube to ysaid operators stationsfand meansiactuatable from ardietance and under the .control of eachoperator for actuatingthe" carrier directing member appropriateto the lchute leading to said operators station.`

v5. Incarrier distributing apparatus for -pneumatic dispatch tubes, a plurality oi carrier directing members pivotally mounted at the discharge end-of the tube, means associated with each carrier'directing member for swinging the member into a position atJthe end ot' the-tube to direct a carrier in c alateral direction, aplurality otroperators stations, and meansat each operators station for bringing about'the actuation of the carrierV directing. member appropriate to that station. l

`6. In carrier distributing apparatus for pneumatic dispatch tubes, atable having stations ior operators at its opposite sides,

'a downwardly projecting, tube having its discharge end spaced above the center of the table carrier deliver 1 chut-es extendingv from the discharge endet1 the tube to said operators stations, carrier directing members mounted at the discharge end ofthe tube for directing carriers into said delivery chutes, and means at-,eachoperators stationfor bringing about the actuation of the vcarrier directing memberappropriate to that station.

,7., In a discharge terminal tor pneumatic dispatch tubes, a-cariier directing-member and pneumatically operated devices; kunder the-,control :ofthe operators `for directing carriers through. l the chutes j. to @the appropriate stations. i

x 9,. kIn la discharge terminal A'for pneumatici dispatchy tubes, carrier directing members pivotaliy mounted at ,the discharge yend of a tube, aplurality ot operatorsistations,

chutesV leading` troni-the discharge'endfof g thetubeto said'operators stations', apneumatically operable device connectedto. feach carrier directing :member for .swinging fthe member-into position at the deliveryfend of tlietube to directa carrier into one of Said chutes,r and valve device yaccessible to each operator i'ori bringing .about the actuation of the appropriate pncumatically operabledef ingtotheoperators station.` Y l .Y

vicel todivert a carrier into tliecliute lead- 10.1111 carrier,distributing` apparatus for pneumatic dispatch tubes, a fpluralitymof carrierfdirecting members pivotallyy mounted l at the discharge end ofthetube, a pneumatic `device/for each member connectedintoithe c `pneumaticYsystem and arranged tooperate one of fthe carrier directing members, `la

plurality oit operators stations', chutes lead# ing from tlietubeto the operators stations,

a valvedevice accessible. to each operators station, and a connection between each of said valve devices and one otfsaid carrierv directiiiginembers, whereby vactuation of the valve will result in the operation of f the appropriate carrier directing member 1 to fdi-V recta carrier linto the chuteleading tothe operators station.y

11. `In carrier distributing"y apparatus fory -Apneuniaticy dispatch tubes, a pair-k ofkcarlei' Y `directing:members pivotally mounted at opposite sides of the dischargeend of the tube,

a pair vot pneumatic devices mounted vadjacent the carrier directing members and' operatively connected thereto, a connection between one side of each pneumatic device and the pneumatic system, a pair of operators" stations located at opposite sidesot the discharge end olf they tube, a manually operable valve device at each ope'rators station, and a connection between each valve device and the other side of thev pneumatic device appropriate to that station, whereby actuation of eithervalve deV-icewi l bring about the operation ot the corresponding pneumatic device tofcause a carrier .to be delivered the respective operators station. l Y

l2. In carrier distributing a aratus for nV l b pneumatic dispatc-ii systems, a pair of carrier directing members pivotally mounted at opposite sides-ot the discharge `end of the tube, a pair' otpneumatic devices mounted adjacent the, carrier directing members and. operatively connected thereto, a connection between one side of each pneumatic device and-the pneumatic system, a pair of operatois stations located atopposite sides of the diseharge'end of thetube, a manually operfable valve device at each operators station, a connection between each valve device and the other side of the pneumatic device appropriate to that station, whereby actuation of either valve device Will bring about the yoperation ot the corresponding pneumatic device to cause a carrier to be delivered at 'the respective ope 'ators station.

bers and operatively connected thereto, a

connection between one side of each pneumatic device and the pneumatic system, a manually operable valve device accessible to keach operatorie station, a connection beltween each valve device and the other side of the pneumatic 'device appropriate to that station, whereby actuation of either valve device will bring about the operation ot the corresponding pneumatic device to cause a carrier to be delivered at the respective operators station.

la. n a carrier distributing apparatus for pneumatic dispatch systems, carrier direct ing members pivotally mounted at the discharge end of a pneumatic dispatch tube, pneumatic devices mountedadjacent the vcarrier directing members and operatively conviiollowing an operation. f

Leccese vnected thereto, a connection between'each pneumatic d vice and the pneumaticsystem, a plurality of operators stations, a control device at each operators station, a connection between the control device and the pneumatic device appropriate to that station, and

a stop device operable by each pneumatic' device for checking the progress of following ca riers While a carrier is being diverted by one of said carrier directing members.

l5. In a carrier distributing apparatus for pneumatic dispatch systems, carrier directing members pivotally mounted at the discharge end ot a pneumatic tube, pneumatic devices mounted adjacent the carrier directing members and operatively connected thereto, said pneumatic devices consisting of a chambered member having a flexible diaphragm mounted to divide the chamber into two compartments, the compartment at one side of the diaphragm being connected to a source of partial vacuum, a. spring arranged to move the diaphragm in the other direction when equal pressure conditions exist on opposite sides of the diaphragm, said diaphragm haring a mechanical connection With one oi said carrier directing members, a plurality ot operators stations, a control valve at'eacli operators station connected to the compartment at the other side of the diaphragm, and a byepass around the diaphragm for quickly equalizing pressure conditions on opposite sidesotl the diaphragm Signed at New York, in the county' and State of New York, this lth'dayo August,

. Wriirimivrn-musrnn 

